The Marlin hotend is great for all kinds of filaments. But when printing high temperature filaments like ABS or PA it can come to it’s limits.
We made the hotend is easy swappable in our printer.
Because different hotends have different lengths, you also need to change the fantube.
First you download and print the fantube for your hotend here: https://github.com/3Dator/3dator_mods/tree/master/alternative%20Fantubes
You only need to loosen the screws, that hold the hotend and the fantube in place and swap it out with the new ones.
You will also find step files, which can be easily be adapted to any length of your desire.
Since Firmware version 1.1.3 we implemented the Thermistor for DYZE DESIGN hotends.